Economic and clinical impact of routine weekend catheterization services.

Objectives: To assess the impact of weekend cardiac catheterization (cath) services for nonemergent inpatients.

Study Design: Retrospective cohort study of patients undergoing cath before and after Saturday cath service availability (CSA).

Methods: Cohorts included Friday and Saturday admissions with cath (with or without revascularization) on the subsequent Monday from January 1, 2007, to December 31, 2008 (pre-CSA events), and Friday or Saturday admissions undergoing cath the subsequent or same Saturday from January 1, 2009, to December 31, 2010 (post-CSA events).